After the 2011 Monaco Grand Prix, Lewis Hamilton stands second in the F1 Drivers' Championship table with almost four times the points total of Ferrari driver Felipe Massa. That seems, to this writer, to fairly reflect their relative current abilities.Whoever Hamilton's rivals are on the F1 track, Felipe Massa is not among them, that is very clear.So it might be surprising that Massa should be so voluble in demanding Hamilton's head on a plate following an on-track incident between the two.To set the scene for that incident, I ask readers to remember what could have been a very similar incident between Michael Schumacher and Hamilton early in the race. Schumacher had seen an opportunity to get on the inside of Hamilton going into the hairpi...